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Phospholipid tubule suspension near a flat substrate

Authors
Journal
Journal of Colloid and Interface Science
0021-9797
Publisher
Elsevier
Publication Date
Volume
142
Issue
1
Identifiers
DOI: 10.1016/0021-9797(91)90040-f
Disciplines
  • Philosophy

Abstract

Abstract A semi-phenomenological calculation, accounting for van der Waals attractions and short range repulsions, is presented for an aqueous suspension of highly elongated lipid “tubules” and an acrylic surface. For a variety of conditions it is found that the Helmholtz potential has a hump a few k B T in height and located several micrometers from the wall. This barrier tends to prevent irreversible binding of tubules to the substrate, consistent with experimental observation. If the van der Waals attractions were sufficiently strong, however, the hump would vanish and the tubules would rapidly and irreversibly bind to the surface.

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